Don't know about the Roku2, but my WD Live TV Plus plays everything the Roku does plus just about every kind of files including .m2ts, vob, video_ts, etc..
With selected Netflix titles; it outputs Dolby 5.1 and its appropriate subtitles, and for the first time, whenever I streamed Netflix titles with 5.1 the bright blue 'HD AUDIO' lights up on the 2310CI!

as I said less than 10 posts up... the 2310 supports ALL current audio formats. So if the device claims to output it, the 2310 can play it.

I saw your post.... but it's always nice to hear from someone using the gear in question. It took me a while to find the specs. that specifically state that the 2310 supports "Dolby Digital Plus".
I don't have any high definition audio devices connected to the AVR (yet), just plain DD and the six analog outputs of a SACD/DVD-A player.

I have the 890 and for the first time this weekend I've had a problem with it. I just finished watching the 6 Star Wars movies and on 2 of them (Ep 2 and 4) I have a problem where the audio cuts off about 20 times during the movies while bitstreaming from my BD player (Panny DMP-BD35). I tried different HDMI cables and different inputs on the AVR. I also tried with my neighbor's PS3 and the same thing happens, the audio cuts off when the BD players output bitstream but is fine when they output PCM. The audio is fine if I set the players to bitstream and turn off the AVR (sound get redirected to the TV speakers) or if I connect them directly to the TV. In 2 years, this is the first time that I encountered a movie (well 2 movies) that do this.

Could a firmware update solve my issue? Is there a way to do a firmware update on the 890? If yes, where can I find the proper files and the instructions on how to do it?

^^
It's not likely a firmware issue (rather the movie itself) as others are also reporting audio issues with other models with these Star Wars discs, although if it were firmware related, the 890 would have to be sent in to an authorized repair facility that is capable of doing the update (unlike the 2310CI which the owner can install the update themselves).

Thanks for the quick reply.
I tried to google if others have had the same problem but couldn't find anything.
Do you know if it is all the same discs no matter which boxset or if I exchange it for a new one I might be OK.
Any link would be helpful. Thanks.

The guy who posted in the 2809 thread here, indicated he bought a 2nd set of discs and has the same issue with them as well. If you don't have a problem with any other movie discs, then it's likely just a bad disc press.

I am having the same problem with audio dropouts with Star Wars ep. 2 & 4. I have a Denon AVR-2310CI. I have tried 4 Blu-ray players and have the same results using any of the 4 (latest PS3, older PS3, Samsung 3600, Sony BDP-S570). If the players are set to bitstream and the Denon decodes the DTS-HD MA soundtrack there are intermittent dropouts at the same exact timecodes no matter what player is used. If the player is set to LPCM out, the audio from the Denon is fine with no dropouts. I'm sure it is a Denon problem. I called them and their support person was not helpful. He had me reset the receiver which did nothing to address the problem and was a waste of time. He said I would have to send it in to get a firmware update and that I could not do the update. Yeah, like I want to be without the receiver for weeks. I told him that was unacceptable. I'll just set the PS3 to LPCM out. I am not happy with Denon.

It is by definition a Denon problem, since the receiver will not properly decode the bitstream. What Denon support should have done was to not dismiss this problem but instead to actually assist me. If it truly is THX metadata that is at the root of the problem, you would think they might want to get all the info they could about that from their customers. Like it or not, it is Denon's problem whether they created it or THX did. They have the obligation to follow through with helpful customer support -- not just to tell me to send in the receiver, and sorry I will be without my home theater for a few weeks (months?). C'mon, that's worthless support. It is a Denon problem and they will have to deal with it one way or the other. It is also an Onkyo, Panasonic, Samsung, Sony, (insert manufacturer name), THX, and Lucasfilm problem. But since I own a Denon, and that amp is not decoding the bitstream properly, it is a Denon problem. Of that, I am very certain.

Denon has determined that the 3rd firmware update for the 2310CI released in 2/2010 will resolve the Star Wars: The Complete Saga BD audio dropout issue so if you already have received that update from me you should not be experiencing any audio dropouts. Although the firmware update is available at authorized repair facilities for all models as an "in warranty" repair, regardless of whether actually beyond the 2 year warranty period, 2310CI owners (890 doesn't have the RS-232 jack) that feel comfortable doing their own installation which will require a PC laptop and USB to RS-232 cable that have not already received the update can do so after reading the post linked below. Note that this update is being provided as a courtesy and as such is not supported by Denon should you have any problems with the installation (ie. you cannot call Denon for assistance). If you don't feel comfortable with doing the installation on your own, simply submit it to an authorized repair facility that is able to do the update for you, or the work around is to simply set the Blu Ray player to LPCM, or otherwise "not" bitstream. Please PM me with your model number and "non-gmail" email address to receive the firmware update and instructions to install the update after reviewing post #2013 .

So is this "DTS bomb" being discussed here and in other threads/forums (with regards to the Star Wars boxset) something I have to worry about with my 2310? Or does it only affect older Denon models and/or Onkyo?

So is this "DTS bomb" being discussed here and in other threads/forums (with regards to the Star Wars boxset) something I have to worry about with my 2310? Or does it only affect older Denon models and/or Onkyo?

No, never have with any other discs (I'm still waiting on ordering the SW set). There does seem to be a relatively loud pop on TrueHD tracks when I pause playback for longer than, say, a couple of minutes, but that's when playing ISOs on my HTPC, so that most likely is a system and/or audio driver issue.

^^Try switching the inputs back and forth with the devices turned on (ps3, cable box, tuner, etc.) and see if it'll trigger the audio. If it does, then the problem lies within the Denon 890/2310 experiencing handshake problems.

I have a 5 and 1 setup but never feel the back speakers are loud enough, they are on and can be heard. How would I go about increasing the volume on them? The unit is set to Dolby Digital. I have used the Aud setup.
Thanks